{"id":"CVE-2026-80678","revision":null,"records":[{"revision":"79e72d8314f54bb58a50b3e14c79248a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80678","aliases":[],"title":"i2c: imx: Fix slave registration race and error handling","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Fix slave registration race and error handling\n\nIn i2c_imx_reg_slave(), the slave pointer was assigned before\npm_runtime_resume_and_get(). If pm_runtime_resume_and_get() failed,\nthe error path returned without clearing i2c_imx->slave, leaving it\nnon-NULL and causing all subsequent registration attempts to fail\nwith -EBUSY.\n\nAdditionally, because this driver uses a shared IRQ, the interrupt\nhandler i2c_imx_isr() can execute concurrently and, after acquiring\nslave_lock, dereference i2c_imx->slave. The previous fix attempt\nadded a lockless i2c_imx->slave = NULL on the error path, but that\ncould race with the ISR under the lock and still cause a NULL pointer\ndereference.\n\nFix both issues by deferring the assignment of i2c_imx->slave and\ni2c_imx->last_slave_event to after a successful resume, and by\nperforming the assignment inside the slave_lock critical section.\nThis guarantees that the slave pointer is never left stale on the\nerror path and is always valid when observed by the interrupt handler.","state":0,"publishedAt":"2026-08-28T06:52:47.077+00:00","modifiedAt":"2026-10-16T19:26:32.757+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/i2c/busses/i2c-imx.c\"\n ],\n \"versions\": [\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"754bc62f72fd64b202462367134ac8ce95b005de\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"cfdf6e13518589f911b7eace6ccb788e4ed87397\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"12a4f0950a158d98552cbaeacc35edccd8d975fa\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"614ca6594e301ff682999797c2216e9685558a2b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7414cd6923fd7f78e57086fc964ba2dc25db5c1\",\n \"lessThan\": \"d64ec362c369bbc33833f7936d5f3a706b0d5c45\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/i2c/busses/i2c-imx.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.11\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.217\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.183\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.151\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.103\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.44\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.8\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/754bc62f72fd64b202462367134ac8ce95b005de","https://git.kernel.org/stable/c/cfdf6e13518589f911b7eace6ccb788e4ed87397","https://git.kernel.org/stable/c/b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","https://git.kernel.org/stable/c/d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","https://git.kernel.org/stable/c/12a4f0950a158d98552cbaeacc35edccd8d975fa","https://git.kernel.org/stable/c/614ca6594e301ff682999797c2216e9685558a2b","https://git.kernel.org/stable/c/d64ec362c369bbc33833f7936d5f3a706b0d5c45"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80678","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80678","identifiers":["CVE-2026-80678"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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